Tektronix DPO3000 Series, Service Manual

Page: 39 / 79

Maintenance
This section contains the information needed to do periodic and corrective
maintenance on the oscilloscope, as well as repackaging instructions if you need
to return the oscilloscope to Tektronix for service.
Preventing ESD
Before servicing this product, read the Safety Summary and Introduction at the
front of the manual and the electrostatic discharge (ESD) information below.
CAUTION.
Static discharge can damage any semiconductor component in this
oscilloscope
When performing any service that requires internal access to the oscilloscope,
adhere to the following precautions to avoid damaging internal modules and their
components due to electrostatic discharge.
1. Minimize handling of static-sensitive circuit boards and components.
2. Transport and store static-sensitive modules in their static protected containers
or on a metal rail. Label any package that contains static-sensitive boards.
3. Discharge the static voltage from your body by wearing a grounded antistatic
wrist strap while handling these modules. Service static-sensitive modules
only at a static-free work station.
4. Do not place anything capable of generating or holding a static charge on the
work station surface.
5. Handle circuit boards by the edges when possible.
6. Do not slide the circuit boards over any surface.
7. Avoid handling circuit boards in areas that have a fl oor or work-surface
covering capable of generating a static charge.
Inspection and Cleaning
Inspection and cleaning are done as preventive maintenance. Preventive
maintenance, when done regularly, may prevent oscilloscope malfunction and
enhance its reliability.
Preventive maintenance consists of visually inspecting and cleaning the
oscilloscope and using general care when operating it.
MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual 4–1